Question

39╳38+39╳78+116╳6怎么简便计算？

Answer 1

简便计算39×38+39×78+116×6
解题思路：不能进行简便运算的按顺序计算，简便运算核心是运用加法和乘法各种定律进行计算，计算出整数部分方便后续计算的过程
解题过程：

39×38+39×78+116×6

=39×(38+78)+116×6

=39×116+116×6

=（39+6）×116

=40×116+5×116

=4640+580

=5220

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Answer 2

39×38+39×78+116×6
=39×(38+78)+116×6
=39×116+116×6
=116×(39+6)
=(100+16)×(40+5)
=4000+640+500+80
=5220

Answer 3

39×38+39×78+116×6
=39×(38+78)+116×6
=39×116+116×6
=116×(39+6)
=116×(50-5)
=116×50-116×5
=5800-580
=5220

Answer 4

39X38+39X78+116X6
=39X(38+78)+116X6
=39X116+116X6
=116X(39+6)
=116X45
=5220